In its decision 4A_287/2020 of March 24, 2021, the Federal Supreme Court addresses the issue of the enforcement of a decision regarding account of agency, and provides three cauteries: the conclusions to be enforced must be precise, possible and covered by the decision itself. A company and a bank were bound by a set of banking contracts, in particular for the purchase and sale of options as well as by a lombard loan, which gave rise to contested margin calls. This dispute has already given rise to two published decisions of the Federal Court (ATF 139 III 49, commented in, on the scope of account of agency in complex contracts, and ATF 143 III 420 on the interpretation of the decisions of the Federal Court).